Version 77.5 by Xiaoling on 2022/05/23 16:07
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1 (% style="text-align:center" %)
2 [[image:image-20220523115324-1.jpeg||height="500" width="500"]]
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5 **LHT65N LoRaWAN Temperature & Humidity Sensor Manual**
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23 **Table of Contents：**
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25 {{toc/}}
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29
30 = 1.Introduction =
31
32 == 1.1 What is LHT65N Temperature & Humidity Sensor ==
33
34 (((
35 The Dragino LHT65N Temperature & Humidity sensor is a Long Range LoRaWAN Sensor. It includes a (% style="color:#4f81bd" %)**built-in Temperature & Humidity sensor**(%%) and has an external sensor connector to connect to an external (% style="color:#4f81bd" %)**Temperature Sensor**(%%)**.**
36 )))
37
38 (((
39 The LHT65N allows users to send data and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, building automation, and so on.
40 )))
41
42 (((
43 LHT65N has a built-in 2400mAh non-chargeable battery which can be used for up to 10 years*.
44 )))
45
46 (((
47 LHT65N is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
48 )))
49
50 (((
51 LHT65N supports (% style="color:#4f81bd" %)**Datalog Feature**(%%). It will record the data when there is no network coverage and users can retrieve the sensor value later to ensure no miss for every sensor reading.
52 )))
53
54 (((
55 *The actual battery life depends on how often to send data, please see the battery analyzer chapter.
56 )))
57
58 == 1.2 Features ==
59
60 * Wall mountable
61 * LoRaWAN v1.0.3 Class A protocol
62 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
63 * AT Commands to change parameters
64 * Remote configure parameters via LoRaWAN Downlink
65 * Firmware upgradeable via program port
66 * Built-in 2400mAh battery for up to 10 years of use.
67 * Built-in Temperature & Humidity sensor
68 * Optional External Sensors
69 * Tri-color LED to indicate working status
70 * Datalog feature
71
72 == 1.3 Specification ==
73
74 (((
75 **Built-in Temperature Sensor:**
76 )))
77
78 * (((
79 Resolution: 0.01 °C
80 )))
81 * (((
82 Accuracy Tolerance : Typ ±0.3 °C
83 )))
84 * (((
85 Long Term Drift: < 0.02 °C/yr
86 )))
87 * (((
88 Operating Range: -40 ~~ 85 °C
89 )))
90
91 (((
92 **Built-in Humidity Sensor:**
93 )))
94
95 * (((
96 Resolution: 0.04 %RH
97 )))
98 * (((
99 Accuracy Tolerance : Typ ±3 %RH
100 )))
101 * (((
102 Long Term Drift: < 0.02 °C/yr
103 )))
104 * (((
105 Operating Range: 0 ~~ 96 %RH
106 )))
107
108 (((
109 **External Temperature Sensor:**
110 )))
111
112 * (((
113 Resolution: 0.0625 °C
114 )))
115 * (((
116 ±0.5°C accuracy from -10°C to +85°C
117 )))
118 * (((
119 ±2°C accuracy from -55°C to +125°C
120 )))
121 * (((
122 Operating Range: -55 °C ~~ 125 °C
123 )))
124
125 = 2. Connect LHT65N to IoT Server =
126
127 == 2.1 How does LHT65N work? ==
128
129 (((
130 LHT65N is configured as LoRaWAN OTAA Class A mode by default. Each LHT65N is shipped with a worldwide unique set of OTAA keys. To use LHT65N in a LoRaWAN network, first, we need to put the OTAA keys in LoRaWAN Network Server and then activate LHT65N.
131 )))
132
133 (((
134 If LHT65N is under the coverage of this LoRaWAN network. LHT65N can join the LoRaWAN network automatically. After successfully joining, LHT65N will start to measure environment temperature and humidity, and start to transmit sensor data to the LoRaWAN server. The default period for each uplink is 20 minutes.
135 )))
136
137 == 2.2 How to Activate LHT65N? ==
138
139 The LHT65N has two working modes:
140
141 * **Deep Sleep Mode**: LHT65N doesn’t have any LoRaWAN activation. This mode is used for storage and shipping to save battery life.
142 * **Working Mode**: In this mode, LHT65N works as LoRaWAN Sensor mode to Join LoRaWAN network and send out the sensor data to the server. Between each sampling/tx/rx periodically, LHT65 will be in STOP mode (IDLE mode), in STOP mode, LHT65N has the same power consumption as Deep Sleep mode. 
143
144 (((
145 The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
146 )))
147
148 [[image:image-20220515123819-1.png||height="379" width="317"]]
149
150 [[image:image-20220523153201-19.png||height="163" width="739"]]
151
152 == 2.3 Example to join LoRaWAN network ==
153
154 (% class="wikigeneratedid" %)
155 This section shows an example of how to join the TTN V3 LoRaWAN IoT server. Use with other LoRaWAN IoT servers is of a similar procedure.
156
157 (% class="wikigeneratedid" %)
158 [[image:image-20220522232442-1.png||height="387" width="648"]]
159
160 Assume the LPS8N is already set to connect to [[TTN V3 network>>url:https://eu1.cloud.thethings.network]], So it provides network coverage for LHT65N. Next we need to add the LHT65N device in TTN V3:
161
162
163 === 2.3.1 Step 1: Create Device n TTN ===
164
165 Create a device in TTN V3 with the OTAA keys from LHT65N.
166
167 Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
168
169 [[image:image-20220522232812-2.png||height="219" width="279"]]
170
171 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
172
173 Add APP EUI in the application.
174
175 [[image:image-20220522232916-3.png]]
176
177 [[image:image-20220522232932-4.png]]
178
179 [[image:image-20220522232954-5.png]]
180
181 Note: LHT65N use same payload as LHT65.
182
183 [[image:image-20220522233026-6.png]]
184
185
186 Input APP EUI,  APP KEY and DEV EUI:
187
188 [[image:image-20220522233118-7.png]]
189
190
191 === 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
192
193 Use ACT button to activate LHT65N and it will auto-join to the TTN V3 network. After join success, it will start to upload sensor data to TTN V3 and user can see in the panel.
194
195 [[image:image-20220522233300-8.png||height="219" width="722"]]
196
197
198 == 2.4 Uplink Payload ==
199
200 The uplink payload includes totally 11 bytes. Uplink packets use FPORT=2 and (% style="color:#4f81bd" %)**every 20 minutes**(%%) send one uplink by default.
201
202 After each uplink, the (% style="color:blue" %)**BLUE LED**(%%) will blink once.
203
204 (% border="1" style="background-color:#ffffcc; color:green; width:426px" %)
205 |(% style="width:97px" %)(((
206 **Size(bytes)**
207 )))|(% style="width:39px" %)(((
208 **2**
209 )))|(% style="width:100px" %)(((
210 **2**
211 )))|(% style="width:77px" %)(((
212 **2**
213 )))|(% style="width:47px" %)(((
214 **1**
215 )))|(% style="width:51px" %)(((
216 **4**
217 )))
218 |(% style="width:97px" %)(((
219 **Value**
220 )))|(% style="width:39px" %)(((
221 [[BAT>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.2BAT-BatteryInfo]]
222 )))|(% style="width:100px" %)(((
223 (((
224 [[Built-In Temperature>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.3Built-inTemperature]]
225 )))
226 )))|(% style="width:77px" %)(((
227 (((
228 [[Built-in>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.4Built-inHumidity]]
229 )))
230
231 (((
232 [[Humidity>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.4Built-inHumidity]]
233 )))
234 )))|(% style="width:47px" %)(((
235 [[Ext>>path:#Extension_Sensor]] #
236 )))|(% style="width:51px" %)(((
237 [[Ext value>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.6Extvalue]]
238 )))
239
240 * The First 6 bytes: has fix meanings for every LHT65N.
241 * The 7th byte (EXT #): defines the external sensor model.
242 * The 8^^th^^ ~~ 11^^th^^ byte: the value for external sensor value. The definition is based on external sensor type. (If EXT=0, there won’t be these four bytes.)
243
244 === 2.4.1 Decoder in TTN V3 ===
245
246 When the uplink payload arrives TTNv3, it shows HEX format and not friendly to read. We can add LHT65N decoder in TTNv3 for friendly reading.
247
248 Below is the position to put the decoder and LHT65N decoder can be download from here:
249
250 [[https:~~/~~/www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0 >>https://www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0]]
251
252 [[image:image-20220522234118-10.png||height="353" width="729"]]
253
254 === 2.4.2 BAT-Battery Info ===
255
256 These two bytes of BAT include the battery state and the actually voltage
257
258 [[image:image-20220523152839-18.png]]
259
260 [[image:image-20220522235639-1.png||height="139" width="727"]]
261
262 Check the battery voltage for LHT65N.
263
264 * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
265 * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
266
267 === 2.4.3 Built-in Temperature ===
268
269 [[image:image-20220522235639-2.png||height="138" width="722"]]
270
271 * Temperature:  0x0ABB/100=27.47℃
272
273 [[image:image-20220522235639-3.png]]
274
275 * Temperature:  (0xF5C6-65536)/100=-26.18℃
276
277 === 2.4.4 Built-in Humidity ===
278
279 [[image:image-20220522235639-4.png||height="138" width="722"]]
280
281 * Humidity:    0x025C/10=60.4%
282
283 === 2.4.5 Ext # ===
284
285 Bytes for External Sensor:
286
287 [[image:image-20220523152822-17.png]]
288
289 === 2.4.6 Ext value ===
290
291 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
292
293 [[image:image-20220522235639-5.png]]
294
295 * DS18B20 temp=0x0ADD/100=27.81℃
296
297 The last 2 bytes of data are meaningless
298
299 [[image:image-20220522235639-6.png]]
300
301 * External temperature= (0xF54F-65536)/100=-27.37℃
302
303 (((
304 The last 2 bytes of data are meaningless
305 )))
306
307 (((
308 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
309 )))
310
311
312 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
313
314 Timestamp mode is designed for LHT65N with E3 probe, it will send the uplink payload with Unix timestamp. With the limitation of 11 bytes (max distance of AU915/US915/AS923 band), the time stamp mode will be lack of BAT voltage field, instead, it shows the battery status. The payload is as below:
315
316 (% border="1" style="background-color:#ffffcc; color:green; width:510px" %)
317 |(% style="width:96px" %)(((
318 **Size(bytes)**
319 )))|(% style="width:71px" %)(((
320 **2**
321 )))|(% style="width:99px" %)(((
322 **2**
323 )))|(% style="width:132px" %)(((
324 **2**
325 )))|(% style="width:54px" %)(((
326 **1**
327 )))|(% style="width:64px" %)(((
328 **4**
329 )))
330 |(% style="width:96px" %)(((
331 **Value**
332 )))|(% style="width:71px" %)(((
333 [[External temperature>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H4.2SetExternalSensorMode]]
334 )))|(% style="width:99px" %)(((
335 (((
336 [[Built-In>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.3Built-inTemperature]]
337 )))
338
339 (((
340 [[Temperature>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.3Built-inTemperature]]
341 )))
342 )))|(% style="width:132px" %)(((
343 (((
344 BAT Status &
345 )))
346
347 (((
348 [[Built-in Humidity>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.4Built-inHumidity]]
349 )))
350 )))|(% style="width:54px" %)(((
351 Status & Ext
352 )))|(% style="width:64px" %)(((
353 (((
354 [[Unix Time Stamp>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H4.1SetTransmitIntervalTime]]
355 )))
356 )))
357
358 * **Battery status & (% class="wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink" %)Built-in Humidity(%%)**
359
360 (% border="1" style="background-color:#ffffcc; color:green; width:469px" %)
361 |(% style="width:65px" %)Bit(bit)|(% style="width:267px" %)[15:14]|(% style="width:134px" %)[11:0]
362 |(% style="width:65px" %)Value|(% style="width:267px" %)(((
363 BAT Status
364
365 00(b): Ultra Low ( BAT <= 2.50v)
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367 01(b): Low  (2.50v <=BAT <= 2.55v)
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369 10(b): OK   (2.55v <= BAT <=2.65v)
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371 11(b): Good   (BAT >= 2.65v)
372 )))|(% style="width:134px" %)(((
373 [[Built-in Humidity>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.4Built-inHumidity]]
374
375
376 )))
377
378 * **Status & Ext Byte**
379
380 [[image:image-20220523152434-16.png]]
381
382 * Poll Message Flag: 1: This message is a poll message reply, 0: means this is a normal uplink.
383 * Sync time OK: 1: Set time ok，0: N/A. After time SYNC request is sent, LHT65N will set this bit to 0 until got the time stamp from the application server.
384 * Unix Time Request:1: Request server downlink Unix time, 0 : N/A. In this mode, LHT65N will set this bit to 1 every 10 days to request a time SYNC. (AT+SYNCMOD to set this)
385
386 == 2.5 Show data on Datacake ==
387
388 Datacake IoT platform provides a human-friendly interface to show the sensor data, once we have sensor data in TTN V3, we can use Datacake to connect to TTN V3 and see the data in Datacake. Below are the steps:
389
390 (((
391 **Step 1**: Be sure that your device is programmed and properly connected to the LoRaWAN network.
392 )))
393
394 (((
395 **Step 2**: Configure your Application to forward data to Datacake you will need to add integration. Go to TTN V3 Console ~-~-> Applications ~-~-> Integrations ~-~-> Add Integrations.
396 )))
397
398 (((
399 Add Datacake:
400 )))
401
402 [[image:image-20220523000825-7.png||height="262" width="583"]]
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404
405 Select default key as Access Key:
406
407 [[image:image-20220523000825-8.png||height="453" width="406"]]
408
409 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/]]) , add LHT65 device.
410
411 [[image:image-20220523000825-9.png||height="366" width="392"]]
412
413 [[image:image-20220523000825-10.png||height="413" width="728"]]
414
415 == 2.6 Datalog Feature ==
416
417 This feature is always enabled. When user wants to retrieve the sensor value, he can send a poll command from the IoT platform to ask LHT65N to send the value in the required time slot.
418
419 === 2.6.1 Unix TimeStamp ===
420
421 LHT65N uses Unix TimeStamp format based on
422
423 [[image:image-20220523001219-11.png||height="97" width="627"]]
424
425
426 (((
427 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
428 )))
429
430 (((
431 Below is the converter example
432 )))
433
434 [[image:image-20220523001219-12.png||height="298" width="720"]]
435
436 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
437
438 === 2.6.2 Set Device Time ===
439
440 (((
441 There are two ways to set device’s time:
442 )))
443
444 (((
445 **~1. Through LoRaWAN MAC Command (Default settings)**
446 )))
447
448 (((
449 User need to set SYNCMOD=1 to enable sync time via MAC command.
450 )))
451
452 (((
453 Once LHT65N Joined LoRaWAN network, it will send the MAC command (DeviceTimeReq) and the server will reply with (DeviceTimeAns) to send the current time to LHT65N. If LHT65N fails to get the time from the server, LHT65N will use the internal time and wait for next time request (AT+SYNCTDC to set the time request period, default is 10 days).
454 )))
455
456 (((
457 Note: LoRaWAN Server need to support LoRaWAN v1.0.3(MAC v1.0.3) or higher to support this MAC command feature, Chirpstack,TTN V3 v3 and loriot support but TTN V3 v2 doesn’t support. If server doesn’t support this command, it will through away uplink packet with this command, so user will lose the packet with time request for TTN V3 v2 if SYNCMOD=1.
458 )))
459
460 (((
461
462 )))
463
464 (((
465 **2. Manually Set Time**
466 )))
467
468 (((
469 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
470 )))
471
472 === 2.6.3 Poll sensor value ===
473
474 User can poll sensor value based on timestamps from the server. Below is the downlink command.
475
476 [[image:image-20220523152302-15.png]]
477
478 (((
479 Timestamp start and Timestamp end use Unix TimeStamp format as mentioned above. Devices will reply with all data log during this time period, use the uplink interval.
480 )))
481
482 (((
483 For example, downlink command **31 5FC5F350 5FC6 0160 05**
484 )))
485
486 (((
487 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
488 )))
489
490 (((
491 Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
492 )))
493
494
495 === 2.6.4 Datalog Uplink payload ===
496
497 The Datalog poll reply uplink will use below payload format.
498
499 (((
500 **Retrieval data payload**
501 )))
502
503 (% border="1" style="background-color:#ffffcc; color:green; width:510px" %)
504 |(% style="width:93px" %)(((
505 (((
506 **Size(bytes)**
507 )))
508 )))|(% style="width:71px" %)(((
509 (((
510 **2**
511 )))
512 )))|(% style="width:102px" %)(((
513 (((
514 **2**
515 )))
516 )))|(% style="width:86px" %)(((
517 (((
518 **2**
519 )))
520 )))|(% style="width:86px" %)(((
521 (((
522 **1**
523 )))
524 )))|(% style="width:48px" %)(((
525 (((
526 **4**
527 )))
528 )))
529 |(% style="width:93px" %)(((
530 (((
531 **Value**
532 )))
533 )))|(% style="width:71px" %)(((
534 (((
535 [[External sensor data>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.6Extvalue]]
536 )))
537 )))|(% style="width:102px" %)(((
538 (((
539 (((
540 [[Built In>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.3Built-inTemperature]]
541 )))
542 )))
543
544 (((
545 (((
546 [[Temperature>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.3Built-inTemperature]]
547 )))
548 )))
549 )))|(% style="width:86px" %)(((
550 (((
551 (((
552 [[Built-in>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.4Built-inHumidity]]
553 )))
554 )))
555
556 (((
557 (((
558 [[Humidity>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.4Built-inHumidity]]
559 )))
560 )))
561 )))|(% style="width:86px" %)(((
562 (((
563 [[Poll message flag & Ext>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.6.4DatalogUplinkpayload]]
564 )))
565 )))|(% style="width:48px" %)(((
566 (((
567 (((
568 [[Unix Time Stamp>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.6.1UnixTimeStamp]]
569 )))
570 )))
571
572 (((
573 (((
574
575 )))
576 )))
577 )))
578
579 **Poll message flag & Ext**
580
581 [[image:image-20220523152208-14.png]]
582
583 (((
584 (((
585 Poll Message Flag: 1: This message is a poll message reply.
586 )))
587 )))
588
589 * (((
590 (((
591 Poll Message Flag is set to 1.
592 )))
593 )))
594 * (((
595 (((
596 Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
597 )))
598 )))
599
600 (((
601 (((
602 For example, in US915 band, the max payload for different DR is:
603 )))
604 )))
605
606 (((
607 (((
608 a) DR0: max is 11 bytes so one entry of data
609 )))
610 )))
611
612 (((
613 (((
614 b) DR1: max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
615 )))
616 )))
617
618 (((
619 (((
620 c) DR2: total payload includes 11 entries of data
621 )))
622 )))
623
624 (((
625 (((
626 d) DR3: total payload includes 22 entries of data.
627 )))
628 )))
629
630 (((
631 (((
632 If devise doesn’t have any data in the polling time. Device will uplink 11 bytes of 0   
633 )))
634 )))
635
636
637 **Example:**
638
639 If LHT65N has below data inside Flash:
640
641 [[image:image-20220523144455-1.png||height="335" width="735"]]
642
643 (((
644 If user sends below downlink command: (% style="background-color:yellow" %)3160065F9760066DA705
645 )))
646
647 (((
648 Where : Start time: 60065F97 = time 21/1/19 04:27:03
649 )))
650
651 (((
652 Stop time 60066DA7= time 21/1/19 05:27:03
653 )))
654
655 (((
656
657 )))
658
659 (((
660 LHT65N will uplink this payload.
661 )))
662
663 [[image:image-20220523001219-13.png||height="421" width="727"]]
664
665 7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
666
667 Where the first 11 bytes is for the first entry:
668
669 7FFF089801464160065F97
670
671 Ext sensor data=0x7FFF/100=327.67
672
673 Temp=0x0898/100=22.00
674
675 Hum=0x0146/10=32.6
676
677 poll message flag & Ext=0x41,means reply data,Ext=1
678
679 Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
680
681 == 2.7 Alarm Mode ==
682
683 Alarm mode feature is added since firmware v1.5. When device is in Alarm mode, it will check the built-in sensor temperature in a short interval. If the temperature exceeds the pre-configure range, it will send an uplink immediately.
684
685 (((
686 (% style="color:red" %)Note: Alarm mode will increase a little big the power consumption, we recommend extending the normal reading time when enabling this feature.
687 )))
688
689 (((
690 **AT Commands for Alarm mode:**
691 )))
692
693 (% class="box infomessage" %)
694 (((
695 (((
696 **AT+WMOD=1**: Enable/Disable Alarm Mode. (0:Disable, 1: Enable)
697 )))
698 )))
699
700 (% class="box infomessage" %)
701 (((
702 (((
703 **AT+CITEMP=1**: The interval to check the temperature for Alarm. (Unit: minute)
704 )))
705 )))
706
707 == 2.8 LED Indicator ==
708
709 (((
710 The LHT65N has a triple color LED which for easy shows different stage.
711 )))
712
713 (((
714 While pressing ACT button, the LED will work as per LED status with ACT button.
715 )))
716
717 (((
718 In a normal working state:
719 )))
720
721 * (((
722 For each uplink, the BLUE LED or RED LED will blink once.
723 )))
724 * (((
725 BLUE LED when an external sensor is connected
726 )))
727 * (((
728 RED LED when an external sensor is not connected
729 )))
730 * (((
731 For each success downlink, the PURPLE LED will blink once
732 )))
733
734 ----
735
736 == 2.9 Installation ==
737
738 [[image:image-20220516231650-1.png||height="436" width="428"]]
739
740 = 3. Sensors & Accessories =
741
742 == 3.1 E3 Temperature Probe ==
743
744 [[image:image-20220515080154-4.png||height="182" width="161"]] [[image:image-20220515080330-5.png||height="201" width="195"]]
745
746
747 With Temperature sensor with 2 meters cable long
748
749 * Resolution: 0.0625 °C
750 * ±0.5°C accuracy from -10°C to +85°C
751 * ±2°C accuracy from -55°C to +125°C
752 * Operating Range: -40 ~~ 125 °C
753 * -55°C to 125°C
754 * Working voltage 2.35v ~~ 5v
755
756 = 4. Configure LHT65N via AT Command or LoRaWAN Downlink =
757
758 (((
759 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
760 )))
761
762 * (((
763 AT Command Connection: See [[FAQ>>path:#AT_COMMAND]].
764 )))
765 * (((
766 LoRaWAN Downlink instruction for different platforms:
767 )))
768
769 (((
770 [[http:~~/~~/wiki.dragino.com/index.php?title=Main_Page#Use_Note_for_Server>>url:http://wiki.dragino.com/index.php?title=Main_Page#Use_Note_for_Server]]
771 )))
772
773 (((
774 There are two kinds of commands to configure LHT65N, they are:
775 )))
776
777 (((
778 (% style="color:#4f81bd" %)* **General Commands**.
779 )))
780
781 (((
782 These commands are to configure:
783 )))
784
785 * (((
786 General system settings like: uplink interval.
787 )))
788 * (((
789 LoRaWAN protocol & radio-related commands.
790 )))
791
792 (((
793 They are the same for all Dragino Devices which supports DLWS-005 LoRaWAN Stack(Note~*~*). These commands can be found on the wiki:
794 )))
795
796 (((
797 [[http:~~/~~/wiki.dragino.com/index.php?title=End_Device_Downlink_Command>>url:http://wiki.dragino.com/index.php?title=End_Device_Downlink_Command]]
798 )))
799
800 (((
801 (% style="color:#4f81bd" %)* **Commands special design for LHT65N**
802 )))
803
804 (((
805 These commands are only valid for LHT65N, as below:
806 )))
807
808 == 4.1 Set Transmit Interval Time ==
809
810 Feature: Change LoRaWAN End Node Transmit Interval.
811
812 **AT Command: AT+TDC**
813
814 [[image:image-20220523150701-2.png]]
815
816 (((
817 **Downlink Command: 0x01**
818 )))
819
820 (((
821 Format: Command Code (0x01) followed by 3 bytes time value.
822 )))
823
824 (((
825 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
826 )))
827
828 * (((
829 **Example 1**: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
830 )))
831 * (((
832 **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
833 )))
834
835 == 4.2 Set External Sensor Mode ==
836
837 Feature: Change External Sensor Mode.
838
839 **AT Command: AT+EXT**
840
841 [[image:image-20220523150759-3.png]]
842
843 (((
844 **Downlink Command: 0xA2**
845 )))
846
847 (((
848 Total bytes: 2 ~~ 5 bytes
849 )))
850
851 (((
852 **Example:**
853 )))
854
855 * (((
856 0xA201: Set external sensor type to E1
857 )))
858 * (((
859 0xA209: Same as AT+EXT=9
860 )))
861 * (((
862 0xA20702003c,Same as AT+SETCNT=60
863 )))
864
865 == 4.3 Enable/Disable uplink Temperature probe ID ==
866
867 Feature: If PID is enabled, device will send the temperature probe ID on:
868
869 * First Packet after OTAA Join
870 * Every 24 hours since the first packet.
871
872 PID is default set to disable (0)
873
874 **AT Command:**
875
876 [[image:image-20220523150928-4.png]]
877
878 **Downlink Command:**
879
880 * 0xA800  **~-~->** AT+PID=0
881 * 0xA801     **~-~->** AT+PID=1
882
883 == 4.4 Set Password ==
884
885 Feature: Set device password, max 9 digits
886
887 **AT Command: AT+PWORD**
888
889 [[image:image-20220523151052-5.png]]
890
891 (((
892 **Downlink Command:**
893 )))
894
895 (((
896 No downlink command for this feature.
897 )))
898
899 == 4.5 Quit AT Command ==
900
901 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
902
903 **AT Command: AT+DISAT**
904
905 [[image:image-20220523151132-6.png]]
906
907 **Downlink Command:**
908
909 No downlink command for this feature.
910
911 == 4.6 Set to sleep mode ==
912
913 Feature: Set device to sleep mode
914
915 **AT Command: AT+SLEEP**
916
917 [[image:image-20220523151218-7.png]]
918
919 **Downlink Command:**
920
921 * There is no downlink command to set to Sleep mode.
922
923 == 4.7 Set system time ==
924
925 Feature: Set system time, unix format. [[See here for format detail.>>path:#TimeStamp]]
926
927 **AT Command:**
928
929 [[image:image-20220523151253-8.png]]
930
931 **Downlink Command:**
932
933 0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
934
935 == 4.8 Set Time Sync Mode ==
936
937 (((
938 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
939 )))
940
941 (((
942 SYNCMOD is set to 1 by default. If user want to set a different time from LoRaWAN server, user need to set this to 0.
943 )))
944
945 (((
946 **AT Command:**
947 )))
948
949 [[image:image-20220523151336-9.png]]
950
951 **Downlink Command:**
952
953 0x28 01 ~/~/ Same As AT+SYNCMOD=1
954
955 0x28 00 ~/~/ Same As AT+SYNCMOD=0
956
957 == 4.9 Set Time Sync Interval ==
958
959 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
960
961 **AT Command:**
962
963 [[image:image-20220523151411-10.png]]
964
965 **Downlink Command:**
966
967 0x29 0A ~/~/ Same as AT+SYNCTDC=0x0A
968
969 == 4.10 Print data entries base on page. ==
970
971 Feature: Print the sector data from start page to stop page (max is 416 pages).
972
973 **AT Command: AT+PDTA**
974
975 [[image:image-20220523151450-11.png]]
976
977 **Downlink Command:**
978
979 No downlink commands for feature
980
981 == 4.11 Print last few data entries. ==
982
983 Feature: Print the last few data entries
984
985 **AT Command: AT+PLDTA**
986
987 [[image:image-20220523151524-12.png]]
988
989 **Downlink Command:**
990
991 No downlink commands for feature
992
993 == 4.12 Clear Flash Record ==
994
995 Feature: Clear flash storage for data log feature.
996
997 **AT Command: AT+CLRDTA**
998
999 [[image:image-20220523151556-13.png]]
1000
1001 **Downlink Command: 0xA3**
1002
1003 * Example: 0xA301 ~/~/Same as AT+CLRDTA
1004
1005 = 5. Battery & How to replace =
1006
1007 == 5.1 Battery Type ==
1008
1009 LHT65N is equipped with a 2400mAH Li-MnO2 (CR17505) battery . The battery is an un-rechargeable battery with low discharge rate targeting for up to 8~~10 years use. This type of battery is commonly used in IoT devices for long-term running, such as water meters.
1010
1011 (((
1012 The discharge curve is not linear so can’t simply use percentage to show the battery level. Below is the battery performance.
1013 [[image:image-20220515075034-1.png||height="208" width="644"]]
1014 )))
1015
1016 (((
1017 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1018
1019 )))
1020
1021 == 5.2 Replace Battery ==
1022
1023 LHT65N has two screws on the back, Unscrew them, and changing the battery inside is ok. The battery is a general CR17450 battery. Any brand should be ok.
1024
1025 [[image:image-20220515075440-2.png||height="338" width="272"]][[image:image-20220515075625-3.png||height="193" width="257"]]
1026
1027 == 5.3 Battery Life Analyze ==
1028
1029 (((
1030 Dragino battery-powered products are all run in Low Power mode. User can check the guideline from this link to calculate the estimated battery life:
1031 https:~/~/www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf
1032 )))
1033
1034 = 6. Order Info =
1035
1036 (((
1037 Part Number: (% style="color:#4f81bd" %)** LHT65N-XX-YY**
1038 )))
1039
1040 (((
1041 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
1042 )))
1043
1044 * (((
1045 (% style="color:#4f81bd" %)** AS923**(%%): LoRaWAN AS923 band
1046 )))
1047 * (((
1048 (% style="color:#4f81bd" %)** AU915**(%%): LoRaWAN AU915 band
1049 )))
1050 * (((
1051 (% style="color:#4f81bd" %)** EU433**(%%): LoRaWAN EU433 band
1052 )))
1053 * (((
1054 (% style="color:#4f81bd" %)** EU868**(%%): LoRaWAN EU868 band
1055 )))
1056 * (((
1057 (% style="color:#4f81bd" %)** KR920**(%%): LoRaWAN KR920 band
1058 )))
1059 * (((
1060 (% style="color:#4f81bd" %)** US915**(%%): LoRaWAN US915 band
1061 )))
1062 * (((
1063 (% style="color:#4f81bd" %)** IN865**(%%): LoRaWAN IN865 band
1064 )))
1065 * (((
1066 (% style="color:#4f81bd" %)** CN470**(%%): LoRaWAN CN470 band
1067 )))
1068
1069 (((
1070 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
1071 )))
1072
1073 * (((
1074 (% style="color:#4f81bd" %)**E3**(%%): External Temperature Probe
1075 )))
1076
1077 = 7. Packing Info =
1078
1079 (((
1080 **Package Includes**:
1081 )))
1082
1083 * (((
1084 LHT65N Temperature & Humidity Sensor x 1
1085 )))
1086 * (((
1087 Program cable x 1
1088 )))
1089 * (((
1090 Optional external sensor
1091 )))
1092
1093 (((
1094 **Dimension and weight**:
1095 )))
1096
1097 * (((
1098 Device Size:  13.5 x 7 x 3 cm
1099 )))
1100 * (((
1101 Device Weight: 105g
1102 )))
1103 * (((
1104 Package Size / pcs : 14.5 x 8 x 5 cm
1105 )))
1106 * (((
1107 Weight / pcs : 170g
1108 )))
1109
1110 = 8. FCC Warning =
1111
1112 (((
1113 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
1114 )))
1115
1116 (((
1117 (1) This device may not cause harmful interference；
1118 )))
1119
1120 (((
1121 (2) this device must accept any interference received, including interference that may cause undesired operation.
1122 )))
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